
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

/**
 * AUTO-GENERATED FILE. DO NOT MODIFY.
 */

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
import { __extends } from 'tslib';
import { hasOwn, assert, isString, retrieve2, retrieve3, defaults, each, indexOf } from 'zrender/lib/core/util.js';
import * as graphicUtil from '../../util/graphic.js';
import { setDefaultStateProxy, toggleHoverEmphasis } from '../../util/states.js';
import * as labelStyleHelper from '../../label/labelStyle.js';
import { getDefaultLabel } from '../helper/labelHelper.js';
import { getLayoutOnAxis } from '../../layout/barGrid.js';
import DataDiffer from '../../data/DataDiffer.js';
import ChartView from '../../view/Chart.js';
import { createClipPath } from '../helper/createClipPathFromCoordSys.js';
import prepareCartesian2d from '../../coord/cartesian/prepareCustom.js';
import prepareGeo from '../../coord/geo/prepareCustom.js';
import prepareSingleAxis from '../../coord/single/prepareCustom.js';
import preparePolar from '../../coord/polar/prepareCustom.js';
import prepareCalendar from '../../coord/calendar/prepareCustom.js';
import Displayable from 'zrender/lib/graphic/Displayable.js';
import { convertToEC4StyleForCustomSerise, isEC4CompatibleStyle, convertFromEC4CompatibleStyle, warnDeprecated } from '../../util/styleCompat.js';
import { throwError } from '../../util/log.js';
import { createOrUpdatePatternFromDecal } from '../../util/decal.js';
import { STYLE_VISUAL_TYPE, NON_STYLE_VISUAL_PROPS, customInnerStore } from './CustomSeries.js';
import { applyLeaveTransition, applyUpdateTransition } from '../../animation/customGraphicTransition.js';
import { applyKeyframeAnimation, stopPreviousKeyframeAnimationAndRestore } from '../../animation/customGraphicKeyframeAnimation.js';
var EMPHASIS = 'emphasis';
var NORMAL = 'normal';
var BLUR = 'blur';
var SELECT = 'select';
var STATES = [NORMAL, EMPHASIS, BLUR, SELECT];
var PATH_ITEM_STYLE = {
	normal: ['itemStyle'],
	emphasis: [EMPHASIS, 'itemStyle'],
	blur: [BLUR, 'itemStyle'],
	select: [SELECT, 'itemStyle']
};
var PATH_LABEL = {
	normal: ['label'],
	emphasis: [EMPHASIS, 'label'],
	blur: [BLUR, 'label'],
	select: [SELECT, 'label']
};
var DEFAULT_TRANSITION = ['x', 'y']; // Use prefix to avoid index to be the same as el.name,
// which will cause weird update animation.

var GROUP_DIFF_PREFIX = 'e\0\0';
var attachedTxInfoTmp = {
	normal: {},
	emphasis: {},
	blur: {},
	select: {}
};
/**
 * To reduce total package size of each coordinate systems, the modules `prepareCustom`
 * of each coordinate systems are not required by each coordinate systems directly, but
 * required by the module `custom`.
 *
 * prepareInfoForCustomSeries {Function}: optional
 *     @return {Object} {coordSys: {...}, api: {
 *         coord: function (data, clamp) {}, // return point in global.
 *         size: function (dataSize, dataItem) {} // return size of each axis in coordSys.
 *     }}
 */

var prepareCustoms = {
	cartesian2d: prepareCartesian2d,
	geo: prepareGeo,
	single: prepareSingleAxis,
	polar: preparePolar,
	calendar: prepareCalendar
};

function isPath(el) {
	return el instanceof graphicUtil.Path;
}

function isDisplayable(el) {
	return el instanceof Displayable;
}

function copyElement(sourceEl, targetEl) {
	targetEl.copyTransform(sourceEl);

	if (isDisplayable(targetEl) && isDisplayable(sourceEl)) {
		targetEl.setStyle(sourceEl.style);
		targetEl.z = sourceEl.z;
		targetEl.z2 = sourceEl.z2;
		targetEl.zlevel = sourceEl.zlevel;
		targetEl.invisible = sourceEl.invisible;
		targetEl.ignore = sourceEl.ignore;

		if (isPath(targetEl) && isPath(sourceEl)) {
			targetEl.setShape(sourceEl.shape);
		}
	}
}

var CustomChartView =
/** @class */
function (_super) {
	__extends(CustomChartView, _super);

	function CustomChartView() {
		var _this = _super !== null && _super.apply(this, arguments) || this;

		_this.type = CustomChartView.type;
		return _this;
	}

	CustomChartView.prototype.render = function (customSeries, ecModel, api, payload) {
		// Clear previously rendered progressive elements.
		this._progressiveEls = null;
		var oldData = this._data;
		var data = customSeries.getData();
		var group = this.group;
		var renderItem = makeRenderItem(customSeries, data, ecModel, api);

		if (!oldData) {
			// Previous render is incremental render or first render.
			// Needs remove the incremental rendered elements.
			group.removeAll();
		}

		data.diff(oldData).add(function (newIdx) {
			createOrUpdateItem(api, null, newIdx, renderItem(newIdx, payload), customSeries, group, data);
		}).remove(function (oldIdx) {
			var el = oldData.getItemGraphicEl(oldIdx);
			el && applyLeaveTransition(el, customInnerStore(el).option, customSeries);
		}).update(function (newIdx, oldIdx) {
			var oldEl = oldData.getItemGraphicEl(oldIdx);
			createOrUpdateItem(api, oldEl, newIdx, renderItem(newIdx, payload), customSeries, group, data);
		}).execute(); // Do clipping

		var clipPath = customSeries.get('clip', true) ? createClipPath(customSeries.coordinateSystem, false, customSeries) : null;

		if (clipPath) {
			group.setClipPath(clipPath);
		} else {
			group.removeClipPath();
		}

		this._data = data;
	};

	CustomChartView.prototype.incrementalPrepareRender = function (customSeries, ecModel, api) {
		this.group.removeAll();
		this._data = null;
	};

	CustomChartView.prototype.incrementalRender = function (params, customSeries, ecModel, api, payload) {
		var data = customSeries.getData();
		var renderItem = makeRenderItem(customSeries, data, ecModel, api);
		var progressiveEls = this._progressiveEls = [];

		function setIncrementalAndHoverLayer(el) {
			if (!el.isGroup) {
				el.incremental = true;
				el.ensureState('emphasis').hoverLayer = true;
			}
		}

		for (var idx = params.start; idx < params.end; idx++) {
			var el = createOrUpdateItem(null, null, idx, renderItem(idx, payload), customSeries, this.group, data);

			if (el) {
				el.traverse(setIncrementalAndHoverLayer);
				progressiveEls.push(el);
			}
		}
	};

	CustomChartView.prototype.eachRendered = function (cb) {
		graphicUtil.traverseElements(this._progressiveEls || this.group, cb);
	};

	CustomChartView.prototype.filterForExposedEvent = function (eventType, query, targetEl, packedEvent) {
		var elementName = query.element;

		if (elementName == null || targetEl.name === elementName) {
			return true;
		} // Enable to give a name on a group made by `renderItem`, and listen
		// events that are triggered by its descendents.

		while ((targetEl = targetEl.__hostTarget || targetEl.parent) && targetEl !== this.group) {
			if (targetEl.name === elementName) {
				return true;
			}
		}

		return false;
	};

	CustomChartView.type = 'custom';
	return CustomChartView;
}(ChartView);

export default CustomChartView;

function createEl(elOption) {
	var graphicType = elOption.type;
	var el; // Those graphic elements are not shapes. They should not be
	// overwritten by users, so do them first.

	if (graphicType === 'path') {
		var shape = elOption.shape; // Using pathRect brings convenience to users sacle svg path.

		var pathRect = shape.width != null && shape.height != null ? {
			x: shape.x || 0,
			y: shape.y || 0,
			width: shape.width,
			height: shape.height
		} : null;
		var pathData = getPathData(shape); // Path is also used for icon, so layout 'center' by default.

		el = graphicUtil.makePath(pathData, null, pathRect, shape.layout || 'center');
		customInnerStore(el).customPathData = pathData;
	} else if (graphicType === 'image') {
		el = new graphicUtil.Image({});
		customInnerStore(el).customImagePath = elOption.style.image;
	} else if (graphicType === 'text') {
		el = new graphicUtil.Text({}); // customInnerStore(el).customText = (elOption.style as TextStyleProps).text;
	} else if (graphicType === 'group') {
		el = new graphicUtil.Group();
	} else if (graphicType === 'compoundPath') {
		throw new Error('"compoundPath" is not supported yet.');
	} else {
		var Clz = graphicUtil.getShapeClass(graphicType);

		if (!Clz) {
			var errMsg = '';

			if (process.env.NODE_ENV !== 'production') {
				errMsg = 'graphic type "' + graphicType + '" can not be found.';
			}

			throwError(errMsg);
		}

		el = new Clz();
	}

	customInnerStore(el).customGraphicType = graphicType;
	el.name = elOption.name; // Compat ec4: the default z2 lift is 1. If changing the number,
	// some cases probably be broken: hierarchy layout along z, like circle packing,
	// where emphasis only intending to modify color/border rather than lift z2.

	el.z2EmphasisLift = 1;
	el.z2SelectLift = 1;
	return el;
}

function updateElNormal( // Can be null/undefined
	api, el, dataIndex, elOption, attachedTxInfo, seriesModel, isInit) {
	// Stop and restore before update any other attributes.
	stopPreviousKeyframeAnimationAndRestore(el);
	var txCfgOpt = attachedTxInfo && attachedTxInfo.normal.cfg;

	if (txCfgOpt) {
		// PENDING: whether use user object directly rather than clone?
		// TODO:5.0 textConfig transition animation?
		el.setTextConfig(txCfgOpt);
	} // Default transition ['x', 'y']

	if (elOption && elOption.transition == null) {
		elOption.transition = DEFAULT_TRANSITION;
	} // Do some normalization on style.

	var styleOpt = elOption && elOption.style;

	if (styleOpt) {
		if (el.type === 'text') {
			var textOptionStyle = styleOpt; // Compatible with ec4: if `textFill` or `textStroke` exists use them.

			hasOwn(textOptionStyle, 'textFill') && (textOptionStyle.fill = textOptionStyle.textFill);
			hasOwn(textOptionStyle, 'textStroke') && (textOptionStyle.stroke = textOptionStyle.textStroke);
		}

		var decalPattern = void 0;
		var decalObj = isPath(el) ? styleOpt.decal : null;

		if (api && decalObj) {
			decalObj.dirty = true;
			decalPattern = createOrUpdatePatternFromDecal(decalObj, api);
		} // Always overwrite in case user specify this prop.

		styleOpt.__decalPattern = decalPattern;
	}

	if (isDisplayable(el)) {
		if (styleOpt) {
			var decalPattern = styleOpt.__decalPattern;

			if (decalPattern) {
				styleOpt.decal = decalPattern;
			}
		}
	}

	applyUpdateTransition(el, elOption, seriesModel, {
		dataIndex: dataIndex,
		isInit: isInit,
		clearStyle: true
	});
	applyKeyframeAnimation(el, elOption.keyframeAnimation, seriesModel);
}

function updateElOnState(state, el, elStateOpt, styleOpt, attachedTxInfo) {
	var elDisplayable = el.isGroup ? null : el;
	var txCfgOpt = attachedTxInfo && attachedTxInfo[state].cfg; // PENDING:5.0 support customize scale change and transition animation?

	if (elDisplayable) {
		// By default support auto lift color when hover whether `emphasis` specified.
		var stateObj = elDisplayable.ensureState(state);

		if (styleOpt === false) {
			var existingEmphasisState = elDisplayable.getState(state);

			if (existingEmphasisState) {
				existingEmphasisState.style = null;
			}
		} else {
			// style is needed to enable default emphasis.
			stateObj.style = styleOpt || null;
		} // If `elOption.styleEmphasis` or `elOption.emphasis.style` is `false`,
		// remove hover style.
		// If `elOption.textConfig` or `elOption.emphasis.textConfig` is null/undefined, it does not
		// make sense. So for simplicity, we do not ditinguish `hasOwnProperty` and null/undefined.

		if (txCfgOpt) {
			stateObj.textConfig = txCfgOpt;
		}

		setDefaultStateProxy(elDisplayable);
	}
}

function updateZ(el, elOption, seriesModel) {
	// Group not support textContent and not support z yet.
	if (el.isGroup) {
		return;
	}

	var elDisplayable = el;
	var currentZ = seriesModel.currentZ;
	var currentZLevel = seriesModel.currentZLevel; // Always erase.

	elDisplayable.z = currentZ;
	elDisplayable.zlevel = currentZLevel; // z2 must not be null/undefined, otherwise sort error may occur.

	var optZ2 = elOption.z2;
	optZ2 != null && (elDisplayable.z2 = optZ2 || 0);

	for (var i = 0; i < STATES.length; i++) {
		updateZForEachState(elDisplayable, elOption, STATES[i]);
	}
}

function updateZForEachState(elDisplayable, elOption, state) {
	var isNormal = state === NORMAL;
	var elStateOpt = isNormal ? elOption : retrieveStateOption(elOption, state);
	var optZ2 = elStateOpt ? elStateOpt.z2 : null;
	var stateObj;

	if (optZ2 != null) {
		// Do not `ensureState` until required.
		stateObj = isNormal ? elDisplayable : elDisplayable.ensureState(state);
		stateObj.z2 = optZ2 || 0;
	}
}

function makeRenderItem(customSeries, data, ecModel, api) {
	var renderItem = customSeries.get('renderItem');
	var coordSys = customSeries.coordinateSystem;
	var prepareResult = {};

	if (coordSys) {
		if (process.env.NODE_ENV !== 'production') {
			assert(renderItem, 'series.render is required.');
			assert(coordSys.prepareCustoms || prepareCustoms[coordSys.type], 'This coordSys does not support custom series.');
		} // `coordSys.prepareCustoms` is used for external coord sys like bmap.

		prepareResult = coordSys.prepareCustoms ? coordSys.prepareCustoms(coordSys) : prepareCustoms[coordSys.type](coordSys);
	}

	var userAPI = defaults({
		getWidth: api.getWidth,
		getHeight: api.getHeight,
		getZr: api.getZr,
		getDevicePixelRatio: api.getDevicePixelRatio,
		value: value,
		style: style,
		ordinalRawValue: ordinalRawValue,
		styleEmphasis: styleEmphasis,
		visual: visual,
		barLayout: barLayout,
		currentSeriesIndices: currentSeriesIndices,
		font: font
	}, prepareResult.api || {});
	var userParams = {
		// The life cycle of context: current round of rendering.
		// The global life cycle is probably not necessary, because
		// user can store global status by themselves.
		context: {},
		seriesId: customSeries.id,
		seriesName: customSeries.name,
		seriesIndex: customSeries.seriesIndex,
		coordSys: prepareResult.coordSys,
		dataInsideLength: data.count(),
		encode: wrapEncodeDef(customSeries.getData())
	}; // If someday intending to refactor them to a class, should consider do not
	// break change: currently these attribute member are encapsulated in a closure
	// so that do not need to force user to call these method with a scope.
	// Do not support call `api` asynchronously without dataIndexInside input.

	var currDataIndexInside;
	var currItemModel;
	var currItemStyleModels = {};
	var currLabelModels = {};
	var seriesItemStyleModels = {};
	var seriesLabelModels = {};

	for (var i = 0; i < STATES.length; i++) {
		var stateName = STATES[i];
		seriesItemStyleModels[stateName] = customSeries.getModel(PATH_ITEM_STYLE[stateName]);
		seriesLabelModels[stateName] = customSeries.getModel(PATH_LABEL[stateName]);
	}

	function getItemModel(dataIndexInside) {
		return dataIndexInside === currDataIndexInside ? currItemModel || (currItemModel = data.getItemModel(dataIndexInside)) : data.getItemModel(dataIndexInside);
	}

	function getItemStyleModel(dataIndexInside, state) {
		return !data.hasItemOption ? seriesItemStyleModels[state] : dataIndexInside === currDataIndexInside ? currItemStyleModels[state] || (currItemStyleModels[state] = getItemModel(dataIndexInside).getModel(PATH_ITEM_STYLE[state])) : getItemModel(dataIndexInside).getModel(PATH_ITEM_STYLE[state]);
	}

	function getLabelModel(dataIndexInside, state) {
		return !data.hasItemOption ? seriesLabelModels[state] : dataIndexInside === currDataIndexInside ? currLabelModels[state] || (currLabelModels[state] = getItemModel(dataIndexInside).getModel(PATH_LABEL[state])) : getItemModel(dataIndexInside).getModel(PATH_LABEL[state]);
	}

	return function (dataIndexInside, payload) {
		currDataIndexInside = dataIndexInside;
		currItemModel = null;
		currItemStyleModels = {};
		currLabelModels = {};
		return renderItem && renderItem(defaults({
			dataIndexInside: dataIndexInside,
			dataIndex: data.getRawIndex(dataIndexInside),
			// Can be used for optimization when zoom or roam.
			actionType: payload ? payload.type : null
		}, userParams), userAPI);
	};
	/**
   * @public
   * @param dim by default 0.
   * @param dataIndexInside by default `currDataIndexInside`.
   */

	function value(dim, dataIndexInside) {
		dataIndexInside == null && (dataIndexInside = currDataIndexInside);
		return data.getStore().get(data.getDimensionIndex(dim || 0), dataIndexInside);
	}
	/**
   * @public
   * @param dim by default 0.
   * @param dataIndexInside by default `currDataIndexInside`.
   */

	function ordinalRawValue(dim, dataIndexInside) {
		dataIndexInside == null && (dataIndexInside = currDataIndexInside);
		dim = dim || 0;
		var dimInfo = data.getDimensionInfo(dim);

		if (!dimInfo) {
			var dimIndex = data.getDimensionIndex(dim);
			return dimIndex >= 0 ? data.getStore().get(dimIndex, dataIndexInside) : undefined;
		}

		var val = data.get(dimInfo.name, dataIndexInside);
		var ordinalMeta = dimInfo && dimInfo.ordinalMeta;
		return ordinalMeta ? ordinalMeta.categories[val] : val;
	}
	/**
   * @deprecated The original intention of `api.style` is enable to set itemStyle
   * like other series. But it is not necessary and not easy to give a strict definition
   * of what it returns. And since echarts5 it needs to be make compat work. So
   * deprecates it since echarts5.
   *
   * By default, `visual` is applied to style (to support visualMap).
   * `visual.color` is applied at `fill`. If user want apply visual.color on `stroke`,
   * it can be implemented as:
   * `api.style({stroke: api.visual('color'), fill: null})`;
   *
   * [Compat]: since ec5, RectText has been separated from its hosts el.
   * so `api.style()` will only return the style from `itemStyle` but not handle `label`
   * any more. But `series.label` config is never published in doc.
   * We still compat it in `api.style()`. But not encourage to use it and will still not
   * to pulish it to doc.
   * @public
   * @param dataIndexInside by default `currDataIndexInside`.
   */

	function style(userProps, dataIndexInside) {
		if (process.env.NODE_ENV !== 'production') {
			warnDeprecated('api.style', 'Please write literal style directly instead.');
		}

		dataIndexInside == null && (dataIndexInside = currDataIndexInside);
		var style = data.getItemVisual(dataIndexInside, 'style');
		var visualColor = style && style.fill;
		var opacity = style && style.opacity;
		var itemStyle = getItemStyleModel(dataIndexInside, NORMAL).getItemStyle();
		visualColor != null && (itemStyle.fill = visualColor);
		opacity != null && (itemStyle.opacity = opacity);
		var opt = {
			inheritColor: isString(visualColor) ? visualColor : '#000'
		};
		var labelModel = getLabelModel(dataIndexInside, NORMAL); // Now that the feature of "auto adjust text fill/stroke" has been migrated to zrender
		// since ec5, we should set `isAttached` as `false` here and make compat in
		// `convertToEC4StyleForCustomSerise`.

		var textStyle = labelStyleHelper.createTextStyle(labelModel, null, opt, false, true);
		textStyle.text = labelModel.getShallow('show') ? retrieve2(customSeries.getFormattedLabel(dataIndexInside, NORMAL), getDefaultLabel(data, dataIndexInside)) : null;
		var textConfig = labelStyleHelper.createTextConfig(labelModel, opt, false);
		preFetchFromExtra(userProps, itemStyle);
		itemStyle = convertToEC4StyleForCustomSerise(itemStyle, textStyle, textConfig);
		userProps && applyUserPropsAfter(itemStyle, userProps);
		itemStyle.legacy = true;
		return itemStyle;
	}
	/**
   * @deprecated The reason see `api.style()`
   * @public
   * @param dataIndexInside by default `currDataIndexInside`.
   */

	function styleEmphasis(userProps, dataIndexInside) {
		if (process.env.NODE_ENV !== 'production') {
			warnDeprecated('api.styleEmphasis', 'Please write literal style directly instead.');
		}

		dataIndexInside == null && (dataIndexInside = currDataIndexInside);
		var itemStyle = getItemStyleModel(dataIndexInside, EMPHASIS).getItemStyle();
		var labelModel = getLabelModel(dataIndexInside, EMPHASIS);
		var textStyle = labelStyleHelper.createTextStyle(labelModel, null, null, true, true);
		textStyle.text = labelModel.getShallow('show') ? retrieve3(customSeries.getFormattedLabel(dataIndexInside, EMPHASIS), customSeries.getFormattedLabel(dataIndexInside, NORMAL), getDefaultLabel(data, dataIndexInside)) : null;
		var textConfig = labelStyleHelper.createTextConfig(labelModel, null, true);
		preFetchFromExtra(userProps, itemStyle);
		itemStyle = convertToEC4StyleForCustomSerise(itemStyle, textStyle, textConfig);
		userProps && applyUserPropsAfter(itemStyle, userProps);
		itemStyle.legacy = true;
		return itemStyle;
	}

	function applyUserPropsAfter(itemStyle, extra) {
		for (var key in extra) {
			if (hasOwn(extra, key)) {
				itemStyle[key] = extra[key];
			}
		}
	}

	function preFetchFromExtra(extra, itemStyle) {
		// A trick to retrieve those props firstly, which are used to
		// apply auto inside fill/stroke in `convertToEC4StyleForCustomSerise`.
		// (It's not reasonable but only for a degree of compat)
		if (extra) {
			extra.textFill && (itemStyle.textFill = extra.textFill);
			extra.textPosition && (itemStyle.textPosition = extra.textPosition);
		}
	}
	/**
   * @public
   * @param dataIndexInside by default `currDataIndexInside`.
   */

	function visual(visualType, dataIndexInside) {
		dataIndexInside == null && (dataIndexInside = currDataIndexInside);

		if (hasOwn(STYLE_VISUAL_TYPE, visualType)) {
			var style_1 = data.getItemVisual(dataIndexInside, 'style');
			return style_1 ? style_1[STYLE_VISUAL_TYPE[visualType]] : null;
		} // Only support these visuals. Other visual might be inner tricky
		// for performance (like `style`), do not expose to users.

		if (hasOwn(NON_STYLE_VISUAL_PROPS, visualType)) {
			return data.getItemVisual(dataIndexInside, visualType);
		}
	}
	/**
   * @public
   * @return If not support, return undefined.
   */

	function barLayout(opt) {
		if (coordSys.type === 'cartesian2d') {
			var baseAxis = coordSys.getBaseAxis();
			return getLayoutOnAxis(defaults({
				axis: baseAxis
			}, opt));
		}
	}
	/**
   * @public
   */

	function currentSeriesIndices() {
		return ecModel.getCurrentSeriesIndices();
	}
	/**
   * @public
   * @return font string
   */

	function font(opt) {
		return labelStyleHelper.getFont(opt, ecModel);
	}
}

function wrapEncodeDef(data) {
	var encodeDef = {};
	each(data.dimensions, function (dimName) {
		var dimInfo = data.getDimensionInfo(dimName);

		if (!dimInfo.isExtraCoord) {
			var coordDim = dimInfo.coordDim;
			var dataDims = encodeDef[coordDim] = encodeDef[coordDim] || [];
			dataDims[dimInfo.coordDimIndex] = data.getDimensionIndex(dimName);
		}
	});
	return encodeDef;
}

function createOrUpdateItem(api, existsEl, dataIndex, elOption, seriesModel, group, data) {
	// [Rule]
	// If `renderItem` returns `null`/`undefined`/`false`, remove the previous el if existing.
	//     (It seems that violate the "merge" principle, but most of users probably intuitively
	//     regard "return;" as "show nothing element whatever", so make a exception to meet the
	//     most cases.)
	// The rule or "merge" see [STRATEGY_MERGE].
	// If `elOption` is `null`/`undefined`/`false` (when `renderItem` returns nothing).
	if (!elOption) {
		group.remove(existsEl);
		return;
	}

	var el = doCreateOrUpdateEl(api, existsEl, dataIndex, elOption, seriesModel, group);
	el && data.setItemGraphicEl(dataIndex, el);
	el && toggleHoverEmphasis(el, elOption.focus, elOption.blurScope, elOption.emphasisDisabled);
	return el;
}

function doCreateOrUpdateEl(api, existsEl, dataIndex, elOption, seriesModel, group) {
	if (process.env.NODE_ENV !== 'production') {
		assert(elOption, 'should not have an null/undefined element setting');
	}

	var toBeReplacedIdx = -1;
	var oldEl = existsEl;

	if (existsEl && doesElNeedRecreate(existsEl, elOption, seriesModel) // || (
	//     // PENDING: even in one-to-one mapping case, if el is marked as morph,
	//     // do not sure whether the el will be mapped to another el with different
	//     // hierarchy in Group tree. So always recreate el rather than reuse the el.
	//     morphHelper && morphHelper.isOneToOneFrom(el)
	// )
	) {
		// Should keep at the original index, otherwise "merge by index" will be incorrect.
		toBeReplacedIdx = indexOf(group.childrenRef(), existsEl);
		existsEl = null;
	}

	var isInit = !existsEl;
	var el = existsEl;

	if (!el) {
		el = createEl(elOption);

		if (oldEl) {
			copyElement(oldEl, el);
		}
	} else {
		// FIMXE:NEXT unified clearState?
		// If in some case the performance issue arised, consider
		// do not clearState but update cached normal state directly.
		el.clearStates();
	} // Need to set morph: false explictly to disable automatically morphing.

	if (elOption.morph === false) {
		el.disableMorphing = true;
	} else if (el.disableMorphing) {
		el.disableMorphing = false;
	}

	attachedTxInfoTmp.normal.cfg = attachedTxInfoTmp.normal.conOpt = attachedTxInfoTmp.emphasis.cfg = attachedTxInfoTmp.emphasis.conOpt = attachedTxInfoTmp.blur.cfg = attachedTxInfoTmp.blur.conOpt = attachedTxInfoTmp.select.cfg = attachedTxInfoTmp.select.conOpt = null;
	attachedTxInfoTmp.isLegacy = false;
	doCreateOrUpdateAttachedTx(el, dataIndex, elOption, seriesModel, isInit, attachedTxInfoTmp);
	doCreateOrUpdateClipPath(el, dataIndex, elOption, seriesModel, isInit);
	updateElNormal(api, el, dataIndex, elOption, attachedTxInfoTmp, seriesModel, isInit); // `elOption.info` enables user to mount some info on
	// elements and use them in event handlers.
	// Update them only when user specified, otherwise, remain.

	hasOwn(elOption, 'info') && (customInnerStore(el).info = elOption.info);

	for (var i = 0; i < STATES.length; i++) {
		var stateName = STATES[i];

		if (stateName !== NORMAL) {
			var otherStateOpt = retrieveStateOption(elOption, stateName);
			var otherStyleOpt = retrieveStyleOptionOnState(elOption, otherStateOpt, stateName);
			updateElOnState(stateName, el, otherStateOpt, otherStyleOpt, attachedTxInfoTmp);
		}
	}

	updateZ(el, elOption, seriesModel);

	if (elOption.type === 'group') {
		mergeChildren(api, el, dataIndex, elOption, seriesModel);
	}

	if (toBeReplacedIdx >= 0) {
		group.replaceAt(el, toBeReplacedIdx);
	} else {
		group.add(el);
	}

	return el;
} // `el` must not be null/undefined.

function doesElNeedRecreate(el, elOption, seriesModel) {
	var elInner = customInnerStore(el);
	var elOptionType = elOption.type;
	var elOptionShape = elOption.shape;
	var elOptionStyle = elOption.style;
	return (// Always create new if universal transition is enabled.
	// Because we do transition after render. It needs to know what old element is. Replacement will loose it.
		seriesModel.isUniversalTransitionEnabled() // If `elOptionType` is `null`, follow the merge principle.
    || elOptionType != null && elOptionType !== elInner.customGraphicType || elOptionType === 'path' && hasOwnPathData(elOptionShape) && getPathData(elOptionShape) !== elInner.customPathData || elOptionType === 'image' && hasOwn(elOptionStyle, 'image') && elOptionStyle.image !== elInner.customImagePath // // FIXME test and remove this restriction?
	// || (elOptionType === 'text'
	//     && hasOwn(elOptionStyle, 'text')
	//     && (elOptionStyle as TextStyleProps).text !== elInner.customText
	// )

	);
}

function doCreateOrUpdateClipPath(el, dataIndex, elOption, seriesModel, isInit) {
	// Based on the "merge" principle, if no clipPath provided,
	// do nothing. The exists clip will be totally removed only if
	// `el.clipPath` is `false`. Otherwise it will be merged/replaced.
	var clipPathOpt = elOption.clipPath;

	if (clipPathOpt === false) {
		if (el && el.getClipPath()) {
			el.removeClipPath();
		}
	} else if (clipPathOpt) {
		var clipPath = el.getClipPath();

		if (clipPath && doesElNeedRecreate(clipPath, clipPathOpt, seriesModel)) {
			clipPath = null;
		}

		if (!clipPath) {
			clipPath = createEl(clipPathOpt);

			if (process.env.NODE_ENV !== 'production') {
				assert(isPath(clipPath), 'Only any type of `path` can be used in `clipPath`, rather than ' + clipPath.type + '.');
			}

			el.setClipPath(clipPath);
		}

		updateElNormal(null, clipPath, dataIndex, clipPathOpt, null, seriesModel, isInit);
	} // If not define `clipPath` in option, do nothing unnecessary.
}

function doCreateOrUpdateAttachedTx(el, dataIndex, elOption, seriesModel, isInit, attachedTxInfo) {
	// Group does not support textContent temporarily until necessary.
	if (el.isGroup) {
		return;
	} // Normal must be called before emphasis, for `isLegacy` detection.

	processTxInfo(elOption, null, attachedTxInfo);
	processTxInfo(elOption, EMPHASIS, attachedTxInfo); // If `elOption.textConfig` or `elOption.textContent` is null/undefined, it does not make sense.
	// So for simplicity, if "elOption hasOwnProperty of them but be null/undefined", we do not
	// trade them as set to null to el.
	// Especially:
	// `elOption.textContent: false` means remove textContent.
	// `elOption.textContent.emphasis.style: false` means remove the style from emphasis state.

	var txConOptNormal = attachedTxInfo.normal.conOpt;
	var txConOptEmphasis = attachedTxInfo.emphasis.conOpt;
	var txConOptBlur = attachedTxInfo.blur.conOpt;
	var txConOptSelect = attachedTxInfo.select.conOpt;

	if (txConOptNormal != null || txConOptEmphasis != null || txConOptSelect != null || txConOptBlur != null) {
		var textContent = el.getTextContent();

		if (txConOptNormal === false) {
			textContent && el.removeTextContent();
		} else {
			txConOptNormal = attachedTxInfo.normal.conOpt = txConOptNormal || {
				type: 'text'
			};

			if (!textContent) {
				textContent = createEl(txConOptNormal);
				el.setTextContent(textContent);
			} else {
				// If in some case the performance issue arised, consider
				// do not clearState but update cached normal state directly.
				textContent.clearStates();
			}

			updateElNormal(null, textContent, dataIndex, txConOptNormal, null, seriesModel, isInit);
			var txConStlOptNormal = txConOptNormal && txConOptNormal.style;

			for (var i = 0; i < STATES.length; i++) {
				var stateName = STATES[i];

				if (stateName !== NORMAL) {
					var txConOptOtherState = attachedTxInfo[stateName].conOpt;
					updateElOnState(stateName, textContent, txConOptOtherState, retrieveStyleOptionOnState(txConOptNormal, txConOptOtherState, stateName), null);
				}
			}

			txConStlOptNormal ? textContent.dirty() : textContent.markRedraw();
		}
	}
}

function processTxInfo(elOption, state, attachedTxInfo) {
	var stateOpt = !state ? elOption : retrieveStateOption(elOption, state);
	var styleOpt = !state ? elOption.style : retrieveStyleOptionOnState(elOption, stateOpt, EMPHASIS);
	var elType = elOption.type;
	var txCfg = stateOpt ? stateOpt.textConfig : null;
	var txConOptNormal = elOption.textContent;
	var txConOpt = !txConOptNormal ? null : !state ? txConOptNormal : retrieveStateOption(txConOptNormal, state);

	if (styleOpt && ( // Because emphasis style has little info to detect legacy,
	// if normal is legacy, emphasis is trade as legacy.
		attachedTxInfo.isLegacy || isEC4CompatibleStyle(styleOpt, elType, !!txCfg, !!txConOpt))) {
		attachedTxInfo.isLegacy = true;
		var convertResult = convertFromEC4CompatibleStyle(styleOpt, elType, !state); // Explicitly specified `textConfig` and `textContent` has higher priority than
		// the ones generated by legacy style. Otherwise if users use them and `api.style`
		// at the same time, they not both work and hardly to known why.

		if (!txCfg && convertResult.textConfig) {
			txCfg = convertResult.textConfig;
		}

		if (!txConOpt && convertResult.textContent) {
			txConOpt = convertResult.textContent;
		}
	}

	if (!state && txConOpt) {
		var txConOptNormal_1 = txConOpt; // `textContent: {type: 'text'}`, the "type" is easy to be missing. So we tolerate it.

		!txConOptNormal_1.type && (txConOptNormal_1.type = 'text');

		if (process.env.NODE_ENV !== 'production') {
			// Do not tolerate incorrcet type for forward compat.
			assert(txConOptNormal_1.type === 'text', 'textContent.type must be "text"');
		}
	}

	var info = !state ? attachedTxInfo.normal : attachedTxInfo[state];
	info.cfg = txCfg;
	info.conOpt = txConOpt;
}

function retrieveStateOption(elOption, state) {
	return !state ? elOption : elOption ? elOption[state] : null;
}

function retrieveStyleOptionOnState(stateOptionNormal, stateOption, state) {
	var style = stateOption && stateOption.style;

	if (style == null && state === EMPHASIS && stateOptionNormal) {
		style = stateOptionNormal.styleEmphasis;
	}

	return style;
} // Usage:
// (1) By default, `elOption.$mergeChildren` is `'byIndex'`, which indicates
//     that the existing children will not be removed, and enables the feature
//     that update some of the props of some of the children simply by construct
//     the returned children of `renderItem` like:
//     `var children = group.children = []; children[3] = {opacity: 0.5};`
// (2) If `elOption.$mergeChildren` is `'byName'`, add/update/remove children
//     by child.name. But that might be lower performance.
// (3) If `elOption.$mergeChildren` is `false`, the existing children will be
//     replaced totally.
// (4) If `!elOption.children`, following the "merge" principle, nothing will
//     happen.
// (5) If `elOption.$mergeChildren` is not `false` neither `'byName'` and the
//     `el` is a group, and if any of the new child is null, it means to remove
//     the element at the same index, if exists. On the other hand, if the new
//     child is and empty object `{}`, it means to keep the element not changed.
//
// For implementation simpleness, do not provide a direct way to remove single
// child (otherwise the total indices of the children array have to be modified).
// User can remove a single child by setting its `ignore` to `true`.

function mergeChildren(api, el, dataIndex, elOption, seriesModel) {
	var newChildren = elOption.children;
	var newLen = newChildren ? newChildren.length : 0;
	var mergeChildren = elOption.$mergeChildren; // `diffChildrenByName` has been deprecated.

	var byName = mergeChildren === 'byName' || elOption.diffChildrenByName;
	var notMerge = mergeChildren === false; // For better performance on roam update, only enter if necessary.

	if (!newLen && !byName && !notMerge) {
		return;
	}

	if (byName) {
		diffGroupChildren({
			api: api,
			oldChildren: el.children() || [],
			newChildren: newChildren || [],
			dataIndex: dataIndex,
			seriesModel: seriesModel,
			group: el
		});
		return;
	}

	notMerge && el.removeAll(); // Mapping children of a group simply by index, which
	// might be better performance.

	var index = 0;

	for (; index < newLen; index++) {
		var newChild = newChildren[index];
		var oldChild = el.childAt(index);

		if (newChild) {
			if (newChild.ignore == null) {
				// The old child is set to be ignored if null (see comments
				// below). So we need to set ignore to be false back.
				newChild.ignore = false;
			}

			doCreateOrUpdateEl(api, oldChild, dataIndex, newChild, seriesModel, el);
		} else {
			if (process.env.NODE_ENV !== 'production') {
				assert(oldChild, 'renderItem should not return a group containing elements' + ' as null/undefined/{} if they do not exist before.');
			} // If the new element option is null, it means to remove the old
			// element. But we cannot really remove the element from the group
			// directly, because the element order may not be stable when this
			// element is added back. So we set the element to be ignored.

			oldChild.ignore = true;
		}
	}

	for (var i = el.childCount() - 1; i >= index; i--) {
		var child = el.childAt(i);
		removeChildFromGroup(el, child, seriesModel);
	}
}

function removeChildFromGroup(group, child, seriesModel) {
	// Do not support leave elements that are not mentioned in the latest
	// `renderItem` return. Otherwise users may not have a clear and simple
	// concept that how to control all of the elements.
	child && applyLeaveTransition(child, customInnerStore(group).option, seriesModel);
}

function diffGroupChildren(context) {
	new DataDiffer(context.oldChildren, context.newChildren, getKey, getKey, context).add(processAddUpdate).update(processAddUpdate).remove(processRemove).execute();
}

function getKey(item, idx) {
	var name = item && item.name;
	return name != null ? name : GROUP_DIFF_PREFIX + idx;
}

function processAddUpdate(newIndex, oldIndex) {
	var context = this.context;
	var childOption = newIndex != null ? context.newChildren[newIndex] : null;
	var child = oldIndex != null ? context.oldChildren[oldIndex] : null;
	doCreateOrUpdateEl(context.api, child, context.dataIndex, childOption, context.seriesModel, context.group);
}

function processRemove(oldIndex) {
	var context = this.context;
	var child = context.oldChildren[oldIndex];
	child && applyLeaveTransition(child, customInnerStore(child).option, context.seriesModel);
}
/**
 * @return SVG Path data.
 */

function getPathData(shape) {
	// "d" follows the SVG convention.
	return shape && (shape.pathData || shape.d);
}

function hasOwnPathData(shape) {
	return shape && (hasOwn(shape, 'pathData') || hasOwn(shape, 'd'));
}